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First, in answer to the first question: No, a batteries remaining power does not drop consistently regardless of remaining charge. The simplest answer to the rest of the question is: you want to run the power inverter for as little time as possible. The explanation of this and method to accomplish it follows. The power inverter uses some power itself, so ...


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The remaining time is simple to calc. The battery power vs the consumption rate in this example: Charge Remaining (mAh): 4299 Amperage (mA): -787 (the consumption)- this is a variable based on computer usage. My computer says I have 5:30 Hours left. (which is about correct 4299/787=5.3) However, you will notice it is not a liner function. The ...


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I'm a n00b so can't reply to your comment, but can hopefully give some more details in this answer. Yes, the battery on the 4th gen touch (assuming that's the correct model) is soldered to the board. It would be interesting to know what Target did, as Apple don't do actual repairs on iPods - it would have been replaced like-for-like under their warranty. ...


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Turn blue tooth off. That should help.


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The symptoms you report are common of lithium power cells that are failing. Why not have it looked at by Apple as they have online battery diagnosis available from web support and if you bought it from an Apple Reseller or Apple Directly, the warranty should cover the problem if the battery isn't performing correctly.


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It's more to do with the power level of the transmitter in the phone to maintain a connection than actually searching for a signal. If it was searching then no data could pass. As the signal between the tower and device drops, the phone compensates by increasing output power to maintain the connection therefore using more power.


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I don't know about SeaMonkey, not an app I've seen, but in Safari, make sure Prefs Cmd , > Advanced > Internet Plugins : 'Stop plug-ins to save power' is checked


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I attempted someone else's suggestion to let the battery naturally die off (let something running without actively using it), then charge it back until 100% without unplugging. The first time it did not work, but after I did that for the second time, my phone is back to normal. So... I just needed to be patient I guess.


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I am not sure how we can know this for sure, but I believe that after fully-charged, it is indeed "bypassed". Of course after if drops power it could be charging it back up a little bit, but I have never seen that happen. At least not if judging from the LED indicator on the cable, which remains green at all times


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Two likely solutions: 1) Change the battery. 2) Backup & restore. It is unlikely to be a software problem, considering the circumstances; so there's probably not much you can do without a screwdriver. Just in case, try 2) first and if that doesn't work, take it to an Apple store, and get it looked at by an Apple genius. They will either offer a new ...


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Your question is a great excuse to update and expand my previous answer on interpreting these diagnostic logs. The partial charge field is a simple binary field. A zero means you didn't plug in your phone and these logs document how much usage you got out of a full charge. A one value means that you did plug your phone in after the last full charge and that ...


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Thanks to @MateusvSzlosek, The following one-liner works: echo `date`@`system_profiler SPPowerDataType | grep "Cycle Count" | awk '{print $3}'` >> output.txt


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I think Apple would tell best how to Maximize Battery Life and Lifespan: https://www.apple.com/batteries/maximizing-performance/


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If a lithium ion battery is drained and left to sit for an extended period of time uncharged, it can go into a "sleep" state that does not enable a recharge by standard charging methods. I found this info at http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries "Li-ion should never be discharged too low, and there are several safeguards ...


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There is an app now in the App Store, called BattMan, which I think will do what you need. BattMan lets you choose the battery charge level (as percentage and remaining time, whichever comes first) and will display the notification, but also play a sound (which you can separately enable/disable). You can download it from the Mac App Store. Full Disclosure: ...


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The percentage of battery used also factors in the amount of time you were using either the personal hotspot or the phone. Therefore, the percentage of battery use will also change, based on which service you use more frequently. Popstar is exactly right: constantly searching for a signal requires more power than maintaining a good signal. You could look ...



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